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Related Experiment Videos

High-throughput TILLING for Arabidopsis.

Bradley J Till1, Trenton Colbert, Christine Codomo

  • 1Basic Sciences Division, Fred Hutchison Cancer Research Center, Department of Biology, University of Washington, Seattle, USA.

Methods in Molecular Biology (Clifton, N.J.)
|June 3, 2006
PubMed
Summary

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Targeting Induced Local Lesions in Genomes (TILLING) efficiently identifies point mutations using DNA heteroduplex analysis. This high-throughput method aids researchers in discovering genetic variations across various organisms, including Arabidopsis.

Area of Science:

  • Genetics
  • Molecular Biology
  • Genomics

Background:

  • Targeting Induced Local Lesions in Genomes (TILLING) is a versatile strategy for identifying induced point mutations.
  • This method is applicable to a wide range of organisms for genetic research.

Purpose of the Study:

  • To describe the methodology for high-throughput TILLING.
  • To explain how TILLING can be used to generate allelic series of point mutations.

Main Methods:

  • Fluorescently tagged primers amplify gene segments.
  • Denaturation and reannealing create heteroduplexes between mutated and wild-type DNA.
  • Endonuclease CEL I cleaves heteroduplexes, with products analyzed via denaturing polyacrylamide gel electrophoresis and the LI-COR DNA analyzer.

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Main Results:

  • The described protocol enables high-throughput screening for point mutations.
  • The Arabidopsis TILLING Project (ATP) utilizes this method to provide a resource of point mutations for the research community.

Conclusions:

  • High-throughput TILLING is an effective approach for generating large-scale mutant collections.
  • This methodology significantly advances the study of gene function and genetic variation in model organisms like Arabidopsis.